This file contains the digital vector boundaries for Counties and Unitary Authorities in Great Britain, as at December 2018. The boundaries available are:(BGC) Generalised (20m) - clipped to the coastline (Mean High Water mark).Contains both Ordnance Survey and ONS Intellectual Property Rights.Download File SizesGeneralised (20m) - clipped to the coastline (4 MB)REST URL of ArcGIS for INSPIRE View Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_GB_BGC/MapServer/exts/InspireView REST URL of ArcGIS for INSPIRE Feature Download Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_GB_BGC/MapServer/exts/InspireFeatureDownload REST URL of Feature Access Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_GB_BGC/FeatureServer